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正交频分复用(OFDM)技术是新一代宽带无线通信最具竞争力的备选方案之一,在众多的高速数据传输领域得到广泛地应用。文章对几种典型信道估计算法的复杂度和估计性能进行了理论分析,并分析了导频位置及疏密对估计性能的影响。仿真结果有力地验证了文章的理论分析。文章的分析可以为OFDM系统信道估计算法的选择及导频的放置及其疏密度的设计提供一定的参考。
Orthogonal Frequency Division Multiplexing (OFDM) is one of the most competitive alternatives to next-generation broadband wireless communications. It is widely used in many fields of high-speed data transmission. The paper analyzes the complexity and estimation performance of several typical channel estimation algorithms and analyzes the impact of pilot position and density on the estimation performance. The simulation results strongly verify the theoretical analysis of the article. The analysis of the article can provide certain reference for the selection of OFDM channel estimation algorithm and the placement of pilots and the design of their density.